Straw Rocket
Materials
All that you need for this project is a water balloon, a straw, and tape
Attach Balloon
Attach water balloon to one end of the straw by putting the straw through the open end of the balloon
Tape It
To make sure the balloon stays attached the the straw put tape on the straw and balloon like in the picture
Launch
There are 2 ways to launch you can stand the straw on a flat surface and pull down on the balloon as shown in pic 1. The second is holding the balloon and pulling the straw back as shown in pic 2